Patents by Inventor Ron W. Mumford

Ron W. Mumford has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Negative pressure air filtration housing
    Patent number: D316447
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: April 23, 1991
    Assignee: Critical Industries, Inc.
    Inventors: James C. Woodson, Ron W. Mumford, Kenneth S. Kondo